Green Oaks is a city located in Illinois. With a 2020 population of 3,963, it is the 371st largest city in Illinois and the 5444th largest city in the United States . Green Oaks is currently growing at a rate of 0.84% annually and its population has increased by 2.51% since the most recent census, which recorded a population of 3,866 in 2010. Green Oaks reached it's highest population of 3,963 in 2021. Spanning over 4 miles, Green Oaks has a population density of 1,000 people per square mile.
The average household income in Green Oaks is $226,506 with a poverty rate of 6.96%. The median rental costs in recent years comes to $1,200 per month, and the median house value is $583,200. The median age in Green Oaks is 47.6 years, 46.1 years for males, and 48.6 years for females.